双基限时练(十) unit 4 part ⅰ 基 础 夯 实 ⅰ.单句改错 1．quantities of soil has been washed away because too many trees were cut down. _______________________________________________________ 答案 has→have 2．i'd like to eat out, but in the other hand i should save money. _______________________________________________________ 答案 in→on
